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In this case, does it matter who the carrier is for the "ping" thing? Will a non-AT&T tower pick up my phone?


I'm not sure, but I would assume that yes, your phone is still being pinged for location, but refused a data connection for your use.

Jim Shaw is probably correct that our government made this a term in the contracts to use those radio frequencies. There are probably regulations for the "911" systems that require and depend on this arrangement, as well as spying capabilities. I'm pretty sure that all cell phones will connect with 911 if a connection is available, no contract required.

If I were hurt, and had a phone with me, I think it would be wise to turn it on regardless of rather I could place a call or not. A ping, as I understand it, requires very little bandwidth to work. Much less than a voice quality connection.

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